<template>
  <div class="coursemain">
    <div class="course-main">
      <section class="search-container">
        <div class="search-item">
          <div class="title-name">课程方向：</div>
          <div class="all-items">
            <el-tag
              :class="
                curryType['1'].id ? 'category-poniter-item' : 'category-poniter'
              "
              effect="plain"
              type="info"
              @click="handleAllData"
              >全部</el-tag
            >
            <el-tag
              :class="
                curryType['1'].id == item.id
                  ? 'category-poniter'
                  : 'category-poniter-item'
              "
              effect="plain"
              type="info"
              v-for="item in courseFirstList"
              :key="item.id"
              @click="handleFirstItem('1', item.id)"
            >
              {{ item.categoryName }}
            </el-tag>
          </div>
        </div>
        <div class="search-item search-item-transition" style="top: 45px">
          <div class="title-name">课程分类：</div>
          <div class="all-items">
            <el-tag
              :class="
                curryType['2'].id ? 'category-poniter-item' : 'category-poniter'
              "
              effect="plain"
              type="info"
              >全部</el-tag
            >
            <el-tag
              :class="
                curryType['2'].id == item.id
                  ? 'category-poniter'
                  : 'category-poniter-item'
              "
              effect="plain"
              type="info"
              v-for="item in courseSecondList"
              :key="item.id"
              @click="handleFirstItem('2', item.id)"
            >
              {{ item.categoryName }}
            </el-tag>
          </div>
        </div>
        <div class="search-item" style="top: 90px">
          <div class="title-name">课程难度：</div>
          <div class="all-items">
            <el-tag
              :class="
                curryType['3'].id ? 'category-poniter-item' : 'category-poniter'
              "
              effect="plain"
              type="info"
              >全部</el-tag
            >
            <el-tag
              :class="
                curryType['3'].id == item.code
                  ? 'category-poniter'
                  : 'category-poniter-item'
              "
              effect="plain"
              type="info"
              v-for="item in courseThirdList"
              :key="item.code"
              @click="handleFirstItem('3', item.code)"
            >
              {{ item.name }}
            </el-tag>
          </div>
        </div>
      </section>
    </div>
    <div class="main-container">
      <div class="container-top">
        <ul class="all">
          <li class="item">综合</li>
          <li class="item split">|</li>
          <li class="item">最新课程</li>
          <li class="item split">|</li>
          <li class="item">最多购买</li>
          <li class="item split">|</li>
          <li class="item-price">
            <span>价格</span>
            <span class="arrow">
              <el-icon><CaretTop /></el-icon>
              <el-icon><CaretBottom /></el-icon>
            </span>
          </li>
        </ul>
        <ul class="right">
          <li class="right-item">
            <el-radio-group v-model="radio">
              <el-radio label="1">免费课程</el-radio>
              <el-radio label="2">会员课程</el-radio>
            </el-radio-group>
          </li>
        </ul>
      </div>
      <div class="container-body">
        <div class="newCourseContent">
          <ul class="courseUl">
            <li
              class="courseItem"
              v-for="item in courseSearchList"
              :key="item.id"
            >
              <router-link :to="'/CourseInfo/' + item.id">
                <div class="courseInfo">
                  <div class="courseBg">
                    <img :src="item.courseCover" />
                  </div>
                  <div class="courseName">{{ item.courseName }}</div>
                  <div class="courseDegree">
                    {{ courseTypeFn(item.courseLevel) }} ·
                    {{ item.purchaseCounter + item.purchaseCnt }}人报名
                  </div>
                  <div class="coursePriceZero" v-if="item.discountPrice == 0">
                    <div class="pricefree">免费学习</div>
                    <img src="@/assets/img/logo1.jpg" alt="" />
                  </div>
                  <div class="coursePrice" v-else-if="item.isMember == 1">
                    <div class="courseMemberbg">
                      <span class="courseMember">会员免费</span>
                    </div>
                    <div class="price">¥ {{ item.discountPrice }}</div>
                  </div>
                  <div class="coursePricePri" v-else>
                    <div class="pricePri">¥ {{ item.discountPrice }}</div>
                  </div>
                </div>
              </router-link>
            </li>
          </ul>
        </div>
        <div class="pages">
          <el-pagination
            background
            layout="prev, pager, next"
            :total="courseSearchListTotal"
            @current-change="handleCurrentChange"
          />
        </div>
      </div>
    </div>
  </div>
</template>

<script setup>
import {
  getFirstCategorys,
  getSecondCategorys,
  searchCourse,
} from "@/api/Course/index";
import mixins from "@/mixins/E2C.js";
import { reactive } from "@vue/reactivity";
import { computed, watch, watchEffect } from "@vue/runtime-core";
import { CaretTop , CaretBottom} from "@element-plus/icons-vue";
let { courseTypeFn } = mixins();

let CourseList = reactive({
  courseFirstList: [],
  courseSecondList: [],
  courseSearchList: [],
  courseThirdList: [
    { name: "初级", code: "1" },
    { name: "中级", code: "2" },
    { name: "高级", code: "3" },
  ],
  pageNum: 1,
  pageSize: 8,
  courseSearchListTotal: 0,
  entity: {
    firstCategory: "",
    secondCategory: "",
    courseLevel: "",
    isMember:"",
    isFree:'',
  },
});


// entity:{
// 		firstCategory:'',		string	一级分类ID
// 		secondCategory:'',		string	二级分类ID
// 		tags:'',				string	知识点
// 		isMember:'',			string	会员课程（传1）
// 		isFree:'',				string	免费课程（传1）
// 		courseLevel:'',			string	课程等级（1：初级；2：中级；3：高级）
// 		sortBy:'',				string	排序方式（1：点击量倒序：clicks-desc；2：点击量正序：clicks-asc；3：时间倒序：time-desc；4：时间正序：time-asc；5：售价倒序：price-desc；6：售价正序：price-asc；7：购买数倒序：purchase-desc；6：购买数正序：purchase-asc）
// 	}

let {
  courseFirstList,
  courseSecondList,
  courseThirdList,
  pageNum,
  pageSize,
  courseSearchList,
  courseSearchListTotal,
  entity,
} = toRefs(CourseList);

// 封装多次调用接口的方法
const querySearchCourse = async (pageNum, pageSize, entity) => {
  const res = await searchCourse({
    pageNum,
    pageSize,
    entity,
  });
  courseSearchList.value = res.data.pageInfo.list;
  courseSearchListTotal.value = res.data.pageInfo.total;
};

let secondCategorysParams = reactive({
  categoryId: -1,
});

const getSecondCategorysFn = async (params) => {
  const res = await getSecondCategorys(params);
  courseSecondList.value = res.data.list;
};

onBeforeMount(async () => {
  const res = await getFirstCategorys();
  courseFirstList.value = res.data.list;
  getSecondCategorysFn(secondCategorysParams);
  querySearchCourse(pageNum.value, pageSize.value);
});

let curryType = reactive({
  1: {
    id: "",
  },
  2: {
    id: "",
  },
  3: {
    id: "",
  },
});

const handleAllData = async () => {
  const res = await getFirstCategorys();
  courseFirstList.value = res.data.list;
  getSecondCategorysFn(secondCategorysParams);
  querySearchCourse(pageNum.value, pageSize.value);
  curryType['1'].id = ''
}

const handleFirstItem = async (type, id) => {
  if (type == 1) {
    entity.value.isFree = ''
    entity.value.isMember = ''
    radio.value = '0'
    curryType[type].id = id;
    curryType["2"].id = "";
    curryType["3"].id = "";
    entity.value.secondCategory = "";
    entity.value.courseLevel = "";
    secondCategorysParams.categoryId = id;
    getSecondCategorysFn(secondCategorysParams);
    entity.value.firstCategory = id;
    querySearchCourse(pageNum.value, pageSize.value, entity.value);
    return;
  }
  if (type == 2) {
    entity.value.isFree = ''
    entity.value.isMember = ''
    radio.value = '0'
    curryType["3"].id = "";
    curryType[type].id = id;
    entity.value.courseLevel = "";
    entity.value.secondCategory = id;
    querySearchCourse(pageNum.value, pageSize.value, entity.value);
    return;
  }
  if (type == 3) {
    entity.value.isFree = ''
    entity.value.isMember = ''
    radio.value = '0'
    curryType[type].id = id;
    entity.value.courseLevel = id;
    querySearchCourse(pageNum.value, pageSize.value, entity.value);
    return;
  }
};

const handleCurrentChange = (e) => {
  pageNum.value = e;
  querySearchCourse(pageNum.value, pageSize.value);
};

let radio = ref('0')

watch(radio, (n,o)=>{
  console.log(n);
  console.log(o);
})

watchEffect(()=>{
  if(radio.value == '1'){
    entity.value.isFree = 1
    entity.value.isMember = ''
  }else if(radio.value == '2'){
    entity.value.isFree = ''
    entity.value.isMember = 1
  }
  querySearchCourse(pageNum.value, pageSize.value,entity.value)
})


</script>

<style scoped>
.course-main {
  padding: 20px 0;
  width: 100%;
  height: 130px;
  background: #f3f5f9;
}
.search-container {
  width: 1200px;
  margin: 0 auto;
  position: relative;
  height: 100%;
}
.search-item {
  display: flex;
  overflow: hidden;
  cursor: pointer;
  position: absolute;
  height: 45px;
  transition: all 0.5s;
}
.search-item-transition:hover {
  z-index: 777;
  height: auto;
  box-shadow: rgb(95 101 105 / 10%) 0px 12px 20px 0px;
  border-radius: 8px;
  background: rgba(255, 255, 255);
}
.search-item .title-name {
  width: 100px;
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: bold;
  line-height: 25px;
  text-align: justify;
  color: #333333;
  padding: 10px;
  opacity: 1;
}
.search-item .title-name:after {
  content: ".";
  width: 100%;
  display: inline-block;
  overflow: hidden;
  height: 0;
}

.search-item .all-items {
  width: calc(100% - 120px);
  min-height: 25px;
  display: flex;
  flex-wrap: wrap;
}
.title .all-list {
  width: 40px;
  height: 25px;
  line-height: 25px;
  border-radius: 4px;
  padding: 0 10px;
  align-items: center;
  text-align: center;
}

.title .all {
  opacity: 1;
  color: #2c80ff;
}

.title .item {
  height: 25px;
  line-height: 25px;
  margin: 0 15px;
  font-size: 16px;
  font-family: Microsoft YaHei;
  font-weight: 400;
  line-height: 21px;
  opacity: 1;
}

.title .item .active {
  color: #2c80ff;
}

.category-poniter {
  height: 25px;
  line-height: 25px;
  margin: 10px 5px;
  cursor: pointer;
  border: none;
  background: rgba(44, 128, 255, 0.1);
  color: #2c80ff;
}
.category-poniter-item {
  height: 25px;
  line-height: 25px;
  margin: 10px 5px;
  cursor: pointer;
  border: none;
  background: none;
  color: rgba(81, 87, 89, 1);
}

.main-container {
  width: 1200px;
  margin: 0 auto;
}

.container-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
}

.all {
  display: flex;
  padding-top: 20px;
  font-size: 16px;
  color: #515759;
}

.all .item:first-child {
  margin-right: 20px;
}

.all .item {
  margin: 0 10px;
  cursor: pointer;
}

.right {
  display: flex;
  padding-top: 20px;
  font-size: 16px;
  color: #515759;
}

.right .right-item {
  margin-left: 10px;
}

.right .right-items {
  margin-right: 0px;
}

.arrow {
  position: relative;
}

.arrow i:first-child {
  position: absolute;
  top: -1px;
}

.arrow i:last-child {
  position: absolute;
  top: 7px;
}

.check {
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.up {
  position: absolute;
  top: 5px;
  left: 2px;
}

.down {
  position: absolute;
  top: 15px;
  left: 2px;
  transform: rotate(180deg);
  -ms-transform: rotate(180deg); /* IE 9 */
  -moz-transform: rotate(180deg); /* Firefox */
  -webkit-transform: rotate(180deg); /* Safari 和 Chrome */
  -o-transform: rotate(180deg); /* Opera */
}
.newCourseContent {
  width: 1200px;
  margin: 30px auto 0px auto;
}

.newCourseContent .courseUl {
  display: flex;
  flex-wrap: wrap;
}

.courseItem {
  width: 285px;
  height: 280px;
  margin: 0 20px 20px 0;
  transition: margin-top 0.2s;
}
.courseItem:hover {
  margin-top: -10px;
  cursor: pointer;
}
.courseItem:nth-child(4n + 0) {
  margin-right: 0 !important;
}
.courseInfo {
  position: relative;
  width: 100%;
  height: 270px;
  background: #ffffff;
  box-shadow: 1px 1px 10px rgb(27 39 94 / 40%);
  opacity: 1;
  border-bottom-left-radius: 6px;
  border-bottom-right-radius: 6px;
  overflow: hidden;
  text-decoration: none;
}
.courseBg {
  position: relative;
  width: 100%;
  height: 160px;
}
.courseBg img {
  width: 100%;
  height: 100%;
}
.courseName {
  margin: 10px;
  font-weight: bold;
  font-size: 14px;
  color: #333333;
  display: -webkit-box;
  overflow: hidden;
}
.courseDegree {
  margin-left: 10px;
  font-size: 12px;
  color: #808080;
}
.coursePrice {
  display: flex;
  justify-content: space-around;
  align-items: center;
  width: 130px;
  font-size: 14px;
  margin-top: 15px;
  padding: 0 5px;
}
.coursePricePri {
  width: 75px;
  font-size: 14px;
  margin-top: 18px;
  padding: 0 13px;
  color: rgba(255, 114, 127, 1);
  font-weight: 700;
}
.coursePriceZero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 75px;
  font-size: 14px;
  margin-top: 15px;
  padding: 0 10px;
  color: rgba(53, 134, 255, 1);
}
.courseMemberbg {
  position: relative;
  width: 80px;
  height: 20px;
  color: #ffffff;
  background: linear-gradient(90deg, #ff928e 0%, #fe7062 99%);
  border-radius: 24px 0px 24px 0px;
}
.courseMember {
  position: absolute;
  line-height: 20px;
  left: 13px;
  font-weight: 700;
}
.price {
  line-height: 25px;
  left: 100px;
  color: #ff727f;
  font-weight: 700;
}
.pages {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  margin: 50px auto !important;
}
</style>